Automatically-controlled pump.



W. R. STUTEVILLE. AUTOMATICALLY commoner PUMP. APPLICATION ,HLED OCT. 29, I914- Patented Apr. 13, 1115.

2 SHEETS-SHEET 1.

I 1113mm;

W Elma/1 W W R .STUTEVI 1 5;

W. n.- STUTEVILLE. AUTOMATICALLY CONTROLLED PUMP. m rucmom men 001.29, mm.

ll,l35,221. I

7 To all whom it may concern WILLIAM a. s'ru'rnvrrra; or vas'ra, iaunaasm.

auroraarrcaitrv-con'morrnn I specification of Letters Patent I Application filed Uctober m, 1914. Serial No. 859,803. 1

Be i known that I, WILLIAM R. S'ru'm- VILLE, a citizen of the United States, residing at Vesta, in the county of Johnson and State of Nebraska; have-invented certain new and useful Improvements in Automatically-Controlled Pumps, of which the following is a specification, reference being had to, the accompanying drawings.

This invention relates to certain and has relation more particularly to an apparatus-of this general character especially. designed and adapted for use'ii'r compress ing fluids; and an object of the inventlon is to provide an automatically controlled pump including novel and improved means where v by a predetermined pressure maybe maintained in the tires of a vehicle.

It is also an object of the invention to provide an automatically .controlledpump having novel and improved means whereby 4 Fig. 2 is a sectional view taken substantially the same may be operated. from'the motor of a vehicle and whereby the operative engagement with the motor is under control of the pressure within the tires.

The invention consists in the details of construction and in the combination and a1:

rangement of the several parts of my iin proved automatically whereby certain important advanta es are attained and the device is rendered s1mpler,

less expensive and otherwise more convenient and advantageous for use, all as will be hereinafter more fully set forth.

The novel features of the invention will be carefully defined in the appended claims.

In order that my invention may begthe better understood, 1 will now proceed to describe the same with reference'to the accompanying drawings, where1n Figure 1 1s a View in top plan of'the chassis or body of amotor vehicle, illus-' trating an apparatus constructed in 'accordance with an embodiment of my invention;

on the line 5 of Fig. 1; Fig; 3 1s a sectional view taken substantially on the line 66 of Fig. 1; Fig, 4'is a sectional view taken substantially on the line 7-7 of Fig. 3.

As disclosed in the accompanying drawimprove-'- ments in automatically controlled pumpscontrolled pump 'ings, C denotes a conventional body or chas with an inflatable tire 7 of conventional form and each servingas a receiving rneih belt Suitably supported by the chassis C is a motor M of-any desire type including the driven friction member 9 with which is adapted to coact the friction disk'lOtotata: bly supported by the projected extremity of a-rod 11 operativ'ely engaged with a piston, 12 mounted for reciprocation within a cylinder'14 carried by the chassis C. [The disk 10' is provided with a wrist pin 15 with ama ape. 11a, iara.

which is operatively engaged the compre'sa sion rod 16 coacting with a conventional cylinder 18, said cylinder being herein disclosed as pivotally supported by the'bearing 19 carried by thechassis C, whereby rotation of the disk 10, when in engagement with the driven friction member 9, will result'in the requisite reciprocations of the rod; lfiTltio cylinder l.=d has in communication therewith 7 create therequisit compression, of air.

the flexible; conduit 20 leading to the cyliiider 1% that; as herein embodied' the piston-12?. i

' The cylinder 14 has also in communication therewith below the piston 12 ti conduit 21 extendiiigrearwardlyof the bodyior' chassis (3. 1t is to be observed that the eonduit 211- at its rear extremity is branched order to straddle the conventional transmission T, so

as to more communication, any desired mannergwmh the t1res' or rece1v1ng members A 7 carriedby the wheels 4th As has been set forth; itwill be readily perceived that'the tire on the rear wheels 4 will be readily and conveniently inflated upon rotation of the-disk 10. When the pressure within .the'tires 7 of the rear wheels 1 I 4 reaches a predetermined degree, the excess pressure willimpart an upward movement to the piston l2- which will cause a disen- 1 thereof. Mounted within thecasing 31is a l The tension of theexpansible member 34 may gagement between the disk and the fric-c *tionaljelement 9 and under the influence of the expansible member 28 encircling the rod 11; and interposed-between the piston 12 and thehead 290i the cylinder 14:, the disk 10' will be returned into contact with the fric-' tional element 9 u on the pressure within th e'tires dropping? elow thepredetermined l0 vention appertainsl point below'the. piston-1? thereof is a coin duit 30 in communication with the casin 3 14at a point intermediate the length thereo degree, as is believedto be clearly obvious to those skilled in the art to which my in- ,Also leading from detainee 18 at a ,The casing 31*at a point diametrically opposed to the'point of communication there I I with of the conduit-30 has in communication therewith a second conduit- 32 which also comml'lnicates with the casing 31 at the base valve member '33 having a port a normally maintained .in register with the points of communication between the casing and the f conduits and 32 through the medium oi the expansible member 34, herein disclosed as encircling an extension 35 of the valve and. interposed between the valve member and the endwise adgustable member 36 threaded'through the sad 37 of'the casing.

beregulated upon adjustment of the endwise movable member, for a purpose which will hereinafter be self-evident. The lower portion of the casingBl is intersected by the stop pin 38 whereby the downward movetires or receiving in .alltimes. I140 ment otthe valve member 33is limited toassure an air chamber 39 below such valve at .In communication withithe air chamber 39 are 'the'conduits 40, eachlof said conduits bemg m su1table communication with the j bers' Zcarried by the;

front wheels/I6.

Itzwlll be observed thatlupon an excess ,pressure within the tiresflon the forward wheels 6, the-valvememb'er 33 will-be ele-' .below a predetermined vated and causedl'toclose the communication between the cylinder, 18 and theairchamber 39. It is" also -thought to be obvious that upon decrease of pressure within the tires member 34 automaticafly moves the valve member 33 downward and permitsair to be forced within the tires.

- J-While a is'believed tobe self-enema.

might be wellt'o state that theadjustment of the endwise movable member 36 serves to controlthepressure at which the valve mem ber. 33 will be elevated and also determines the degree of pressure at which the disk 10 w llbe ad usted'out of. engagement with the. fr ctlonalLmeinber 9 of the'motorM.

' a frictlon disk'carried oint, the-expansible madam From the foregoing description, .it is thought to be obvious that an automatically controlled pump with my invention'is of an extremely simple and comparatively inexpensive nature and is particularly .welladapted for use by reason of the convenience and facility with which it may be-assembled, and it will also be-obvious that my invention is susceptible of some change andmodification without material departure from the princi les and spirit-thereof and for this reason do not wish to be understood as limiting myself to the precise arrangement and formation of the several parts herein shown in cairying out my invention in practice.

= 1. In combination with areceiving memher, a driven friction member, a cylinder,

.a piston within thecylinder and provided with a rod projecting exteriorly of the cylinder, a friction disk carried by the rod and adapted to engage the friction member, an

air compressor, an operativeconnection be tween the disk and compressor, a conduit leadingfrom the air compressor to the cylinder and in communication with the cylinder constructed in accordance at a point below the piston, and a conduit ed to engage the frict1on member, an air compressor, an operative connection between the disk and compressor, a conduit leadin from the air compressor to the c linder an in communication with the cy inder at a fippint below the piston, a conduit leading c om the cylinder to the receiving member, and a normally open valve interposed in the last named conduit, the excess pressure within the receiving member serving to adjust the valve into a. closed position.

3. In combination with a receiving member,"a driven friction member, a cyhnder, a

piston within the cylinder and rovided with a rod projecting exteriorlyof t e c linder, a friction disk'carried by the rod an adapted to engage the friction member, an air compressor, an operative connection between the disk and compressor, a conduit leading from "the air-compressor to the cylinder and in communication with the cylinder at a point below the piston, a conduit leading from the cylinder to thereceiving member, and means for normally maintaimn the friction disk in engagement with the iction member.

:1. n combmation with'a plurality of receivin' members, an air compressor, con- I eadihgirom the compressor to the memoir h! several receiving members, and. means for In testimony whereof E hereunto ehfix my controlling the flow through certain of the signature in the presence of two Witnesses. conduits inde endent of the remainder Y WILLIAM R. STUTEWLLE. whereby said rst named conduits may be Witnesses: v

5 automatically close& without interfering 1B. 0. Home,

with the operation of the compressor. ARTHUR Bem'rzmomn. 

